| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Characterization of Minerals, Metals and Materials
|
| Presentation Title |
In-situ Raman Microprobing and Ex-situ Raman Mapping of Indented Glasses |
| Author(s) |
Yvonne B. Gerbig, Chris Michaels |
| On-Site Speaker (Planned) |
Yvonne B. Gerbig |
| Abstract Scope |
This talk will address two challenges in the spectroscopic characterization of indented glasses:
(1) in-situ observations of local structural changes during indentation: The integration of in-situ Raman microscopy with instrumented indentation has the potential to provide descriptive insights into the relationship between structure and densification of glasses.
(2) ex-situ mapping of the densified region: Raman spectroscopic measurements in the past suffered from low spatial resolution, hence, requiring impressions created by Newton-range forces to map densification variations with reasonable resolution but potentially affecting the densified area due to crack initiation.
This talk will describe a custom-built optical instrument for in-situ Raman microscopy suitable for collecting high-quality spectroscopic data during the indentation of glasses. Experimental conditions for ex-situ Raman mapping will be discussed under which indentations at milli-Newton force can be effectively studied. Possible pitfalls in ex-situ and in-situ measurements on indented glasses and resulting misinterpretations of spectral data will be highlighted. |
| Proceedings Inclusion? |
Planned: |